Originally Posted by
tomato coupe
The first two links are good, because they’re about quadratic functions, not the quadratic equation, which was your earlier link. But, this is just semantics now. PeteHski’s original objection to my use of the term quadratic was because of the absence of the linear term in aerodynamic drag. We all agree that the term is not required in a quadratic function; we’ve just stated it differently.
on edit: yep, you stated the same while I was (slowly) typing, so we’re all good!
I didn’t say you were wrong.
His mistake was thinking the coefficients had to be nonzero.
(The quadratic equation is about finding roots of quadratic functions.)